Brake mechanism.



No. 695,!3I. Patented' Mar. Il, |902.

W. S. ADAMS.

BRAKE MECHANISHI. (Application med Dec. 1s, 19001) M ,mi L/ N N No. 69 5,I3I. Patented Mar. Il, |902.

W. S. ADAMS.

BRAKE MECHANISM.-

(Applieacion med Dec. '18, 1900.)

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(No. Model.)

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WALTER S. ADAMS, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO JOHN A. BRILL, OF PHILADELPHIA, PENNSYLVANIA.

BRAKE MECHANISM.

SPECJIFGATON forming part of Letters Patent N o. 695,131, dated March 11, 1902. Application filed December 18, 1900. Serial No. 40,238. (No model.)

' brakes employed on pivotal trucks, in others as being especially adapted to the suspensionmotor type of truckthat is, where the motor is carried mainly upon the aXle, but its free end is suspended from the end of the truck-frame outside the wheel-base.

It has been found troublesome in former mechanisms and apparatus of this general type to maintain a proper Working connection between the mainbrake'lever carriedby the truck and the rod that runs to the source of power on the car-bod y when the cal is on a curve by reason of the divergence of the center lines of the truck and car-body. It has also been very difficult in the suspension-motor type of truck to. provide a sufr cient clearance between the brake mechanism and the motor and still maintain a central and stable point for the application of the brake-power. these various objections in a simple and economical manner, first, by arranging the brake-lever substantially at the center of the truck, thus reducing the variations in connection with the rod that runs to the carbody and the source of power; second, by so constructing and locating the various parts of the brake mechanism as to give ample clearance 4for the Inotor, and, third, by providing an adjustable connection between certain parts of the mechanism, whereby the pressure upon lthe brake-shoes can be equall 'ized or differentiated to any degree.

The latter feature is also valuable with single-motor trucks alone to obtain the exact variation of pressure desired. With this construction also the advantage of an upright' brake-lever isobtained in connection with outside brakes "for the wheels.

Vyoke-pedestals 5 for the axle-boxes 6.

My invention overcomes` My invention is illustrated by the aid of the accompanying drawings, in which the same reference characters designate like parts throughout the several views, and in 5'5 which- Figure lis a plan view of a single-motor truck embodying my improvement. Fig. 2 is a longitudinal sectional elevation through the center of the same.

In these figures 1 and 2 denote the wheels and axles; 3, the sides of the frame of the truck, which contain the inverted-U-shaped From the said yokes extend the arms 7, forming continuations of the sides of the frame, which are connected by the angle-iron cross-bars or end pieces 8 8, one or both of which may be curved outwardly, as shown at 8 in Fig. 1, when it is desired to provide clearance for 7o the support of the free end of the motor thereon. Atl 9 are the usual bolster-transoms, which in this instance are secured to the brackets 3, formed integrally or otherwise attached to the side frames 3.

The brake mechanism or apparatus may be suspended from the frame in any desired manner, but preferably from the transoms and end pieces. Again, the means employed for suspension may be varied at will; but I 8o prefer the links, as shown.

Referring to Figs. 1 and 2, one set of brakeshoes 18 are fixed on the beam 17, which shoes are suspended from the end piece 8 of the frame by links 19 in the usual way. This 85 beam 17 is swung back and forth to apply or release the shoes, preferably through the medium of a brake-rod 1G, which extends from the middle of the brake-beam toward the center of the truck, whereit is pivotally attached, 96 as at 12a, to the lower end of a pendent equalizing-lever 12. This lever 12 is freely suspended from the middle of one-of the tran* soms 9 by means of ahanger lO and bolt or pin 1l. It is apparent that other means could 95 be employed for the suspension of the lever 12, but that shown is deemed preferable. The other set of brake-shoes 29 are fixed to the brake-beam 28, which is curved to conform to the curve of the end piece 8' of the Ioo frame for like clearance purposes, the shoes being suspended from the end piece 8a by apart lto provide ample clearance for the motor therebetween. This, in connection with other details, I consider an important feature of my invention, and although it has been described with reference to specific construction shown in the drawings it is evident that `many and various changes could be made therein and still come within the limits of the improvement.

The means for operating this mechanism preferably consists of an upright braking-lever 25, which is pivotally mounted on a pin 24 in ajaw-plate 23, secured to the bar 22, near the center thereof, and to the upper end of which is connected by a pin 25a the rod 26, running to the source of power on the carbody. A connecting-rod 15 extends between the levers l2 and 25 and is adjustably connected to them in any desired manner, but, as shown, is securely pinned or pivoted at one end to the lever 25, near its fulcrum, and at its other end it is adj'ustably attached to the lever 12 by the pin 14 and holes 13.

The function of these holes 13 is to be able to cause different pressures to be placed upon the two sets of brakes. Tovary the brakingpressure on the dierent sets of brake-shoes,

-it is only necessary to adjust the equalizinglever 12 and the connecting-rod l5. This is usual in single-motor-truck brakes to obtain the exact dierence required. It will be noticed that .this arrangement and construction allows the power end of the brakinglever 25 to be located substantially at the center of the truck, thus avoiding much variation in the connection of the lever and the car-body rod when the car is on a curve. `Its exact location is directly in the center of the truck transversely and only a little out of the center longitudinally. The advantage thus gained is important. Another distinct advantage which results from this construction is the use of an upright lever in connection with the outside brakesthat is, brakes on the other side of the wheels from the center of the truck. This results in a more advantageous arrangement of the several parts of the mechanismand a better point of application of the brake-power. A spring or springs of the desired kind can be employed to release the shoes and applied in any manner suitable to the desired condition.

while I have described my invention with particular reference to the details of arrangement and construction, I wish it understood that its scope is not limited thereto, as it is apparent to those skilled in the art that many alterations, substitutions, and changes can be made therein and still come within its purview; but

What I do claim, and desire to secure by Letters Patent, is

l. The combination of a pivotal truck, a brake-lever located with its power end near the center thereof, an equaliZing-barsuspended from the frame of the truck and to which the lower end of the brake-lever is pivoted, brake-beams,brakeshoes carried thereby and connecting mechanism between the beams and the lever.

2. The combination of a pivotal truck, a brake-lever located with its power end near the center thereof, an equalizing-bar suspended from the frame of the truck and to which the lower end of the brake-lever is pivoted, brake-beams, brake-shoes carried thereby, mechanism ,connecting said equalizing-bar and one of said brake-beams, and mechanism capable of adjustment interposed between the remaining beam and the lever.

3. The combination of a car-truck having a bolster-transom, outside brake-shoes for the wheels, beams rigidly connecting the shoes for each pair of wheels and suspended from the ends of the truck-frame, an equalizing-bar connected with one brake-beam and supported from the transom, an upright main brakelever f ulcrumed near its lower end to the said bar and to the upper end of which power is applied to operate the brakes, an equalizinglever pendent from the transom and connected near its lower end to the other brake-beam, and means connecting the latter lever with the main brake-lever, whereby both sets of shoes are simultaneously operated from said main lever.

4. The combination of a pivotal car-truck, outside sets of brake shoes and beams for the wheels of the truck, an upright brake-lever, a transverse equalizingbar between the beams, an intermediate equalizing-lever, and intermediate connections between the bar, said levers and beams, to which brake-lever power is applied to operate the said shoes, the power end of said brake-lever being substantially at the center of the truck, and means to connect said brake-lever to the shoes.

5. The combination of a pivotal car-truck, outside sets of brake shoes and beams for the wheels of the truck, an upright brake-lever, a transverse equalizing bar between the beams, an intermediate equalizing-lever, and intermediate adjustable connections between the bar, said levers, and beams, to which brake-lever power is applied to operate the said shoes, the power end of said lever being substantially at the center of said truck, and means to connect said brake-lever to the shoes.

6. The combination of a pivotal car-truck,- outside sets of brake-shoes for the wheels of the truck suspended from the frame thereof, beams connecting the shoes of each set, a Iloating equaliZing-bar suspended from the frame and operatively connected with one of' TOO IOS

TIO

the truck-frame, brake-beams rigidly connecting the shoes of each set, a loatin g equalizing b ar also suspended from the truckframe, means connecting this bar to one of the brake beams, an upright main lever fulcrurned on said bar near the center thereof, an equalizing-lever f ulcrumed at its upper end on the frame, means connecting its lower end with the other brake-beam, and a connectin g-rod from thelatter lever to the main lever.

8. The combination of a pivotal car-truck, sets of outside brake-shoes, beams connecting shoes of each set, means to suspend the beams' and shoes from the ends of the truck-frame,

`an equalizing-bar suspended from supports on the frame, rods connecting this bar near its ends with thebrake-beam on that end of the truckan upright main lever fulcrumed at its lower end on said bar near the center thereof, and having its other end to'which power is applied located near the center of the truck, a pendent equalizing-lever fulcrumed at its upper end topa support on the frame and ina line longitudinally with the main lever, a rod connecting the lower end of this lever with the other brake-beam near the center thereofwand a rod extending between the two levers and connected to them intermediate their ends.

9. The combination of a car-truck frame, having end pieces and centrally-disposed transoms extending between and secured to the side pieces, brake beams and shoes suspended from said end pieces, an equalizing-bar, hangers and links to suspend thesame from one of said transoms, rodsone near either end of'said bar to connect the brake-beam on that end of the truck therewith, a jaw-plate secured to the said bar near the center thereof, a main brake-lever with its lowerend fulcrurned in this plate, and its upper end to which power is applied located near the center of the truck, means to connect this upper end with the source of power on the car-body, a hanger secured near the middle of the other transom, an equalizing-lever fulcrnmed at its upper end thereon, a'connecting-rod extending `from the lower end of this lever to the other brake-beam, and a connecting means between this equalizing-lever and the main lever.

` shoes including a centrally-disposed brakinglever to which power is applied, and rods connecting the said lever with one set of shoes, the rods being arranged to leave a clear open space for a motor, and adjustable connections and a further rod leading from said lever to the other set of shoes.

ll. In a brake mechanism, the combination of a brake-beam, shoes carried thereby and adapted to press against the wheels outside of the wheel-base, an equalizing-bar, rods connecting the beam and bar near either end so as to provide room between them for a carinotor, a braking-lever to which power is applied connected with said bar, another set of brake-shoes and means connecting this set with the braking-lever, whereby all brakes may be simultaneously applied, the brakes, beam and bar all fbeing adapted to be suspended from the frame of the truck.

12. The combination of a truck frame, brake-beams adapted to be swung from the frame, brake-shoes thereon, an equalizingbar also adapted to be swung from supports on the frame, rods connecting said barwith one of said beams, so as to provide clearance between them for a motor, a braking-lever to which power is applied for operating the brakes and pivoted to the equalizing-baiyand a connecting-,rod pivoted to said lever and its other end connected with theother beam, whereby both sets of brakes may be simultaneously applied. v

13. The combination of a car-truck frame, brake-shoes for the wheels, beams connecting said shoes, and suspended from the frame, a floating equalizing-bar also suspended from the frame, a main brake-lever fulcrumed on the bar to which power is applied to operate the shoes, means connecting theends of the equalizing-bar with the brake-beams on that end of the truck, said means being spaced apart to provideclearance fora motor, a pendent equalizing-lever also supported from the frame, and a connecting means between said lever and said other brake-beam, and means connecting the said two levers. V l

14. The combination of a car-truck frame, brake-shoes for the wheels, beams connecting said shoes, and suspended from the frame, a floating equalizing-bar also suspended `from the frame, a main brake-lever fulcrumed on the bar and to which power is-applied to operate the shoes, means connecting the ends of the equalizing-bar with the' brake-beam on one end of the truck, a `pendent equalizinglever also supported from the frame, a rod connecting said equalizing-lever and the other brake-beam, anda rod connecting thel said two levers. y

l5. The combination of a car-truck traine having end pieces and bolster-transoms extending across between the side pieces thereof,brakeshoes suspended from the end pieces, brake-beams rigidly connecting the shoes of each set, a iioating equalizing-bar, links near each end thereof to suspend the same from one of the bolster-transoms, rods connecting the ends of` said bar with one of saidbeams toprovide clearance between for a motor, a mainbrake-lever fulcrumed to said b ar near IOO IIO

its center and to the upper end of which power is applied to operate the mechanism,

. the centerof the other brake-beam, and a link or rod connecting the equalizing-lever with the main operating-lever.

16. The combination of a car-truck, outside brake-shoes for the wheels suspended from the frame of the truck, brake-beams to which the shoes are xed, an equalizing-bar supported from the frame and inside the wheel-base, rods connecting the bar with the nearest beam, and spaced apart to provide clearance for a motor, an upright main brakelever pivotally secured to the bar near the center of the power end of said lever being close to the center of the truck, an equalizinglever pendent from the frame, a connectingrod from said equalizing-lever to'said main lever, and a rod connecting said equalizinglever with the said other brake-beam.

17. The combination of a truck-frame, of brake sets pendent from the truck-frame, a transverse equaliZing-bar suspended from the truck-frame and connected with one of the brake sets, a braking-lever to which power is applied for manipulating the brakes, one end of which is pivotally connected to the transverse bar, an equalizing-lever depending from the frame and connected with the other brake set and an adjustable connection between the latter lever and the braking-lever for varying the pressure upon the two sets.

18. The combination of a truck frame, brake-beams, links supporting the beams beneath the frame, a swinging equalizing-bar also supported from the frame above and connected with one of the brake-beams, a braking-lever fulcrumed on the said bar to the other end of which power may be applied, another lever pivotally suspended from the frame and connected with the other set of brakes, and a connecting-rod attached to the braking-lever and adj ustably connected with the pendent lever so as to vary the pressure as desired on the two sets of brakes.

19. The combination of a car-truck frame, brake-beams swingingly supported from the ends of the frame, brake-shoes fixed on said beams, bolster-transoms extending across the frame near the middle thereof, an equalizngbar suspended from one of the transoms and rigidly connected as by rods with one of the brake-beams, a main operating brake-lever fulcrumed on the said bar to the upper end of which the brake-power is applied, an equaliZing-lever suspended at its upper end from the other transom, and connected firmly as by a rod with the other brake-beam, and a rod operatively connecting the latter lever with the main lever, the connection with one of them being adjustable along its length to vary the brake-pressures on the shoes.

20. The combination of a car-truck frame, brake-shoes suspended from the frame of the truck, beams to which the shoes are secured, a floating equaliZing-bar suspended from the frame near the transversevoenter of the same,

lcenter thereof, and provided with a series of holes along its length, a rod connecting the lower end of this lever with the other brakebeam, and a connecting-rod pi-voted to the main lever near its lower end and capable of beingjoined with the equalizing-lever at any point by a pin or bolt and the series of holes.

2l. The combination of a car-truck frame, brake-shoes for the wheels, beams connecting said shoes and suspended from the frame, a oating equaliZing-bar also suspended from the frame, a main brake-lever fulcrumed on the bar to which power is applied to operate the shoes, means connecting the ends of the equalizing-bar with the brake-beam on that end of the truck, said means being spaced apart to provide clearance fora motor, a pendent equalizing-lever also supported from the frame and a connecting means between said lever and said other brake-beam, and adjustable means connecting the said two levers to vary the pressure on the brakes.

22. The combination of a car-truck frame, brak e-shoes for the wheels, beams connecting said shoes, and suspended from the frame, a floating equalizing-bar also suspended from the frame, a main brake-lever fulcru'med on the bar to which power is applied to operate the shoes, means connecting the ends of the equalizing-bar with the brake-beams on that end of the truck, said means being spaced apart to provide clearance for a motor, a pendent equalizing-lever also supported from the frame, and a rod connected between said lever and the middle of the other brake-beam, and a rod adjustably connecting the said two levers, whereby the pressure on the two sets of brakes may be varied.

23. The combination of a car-truck frame having end pieces and bolster-transoms eX- tending across between the side pieces thereof, brake -shoes suspended from the end pieces, brake-beams rigidly connecting the shoes of each' set, a floating equalizing-bar, links near each end thereof to suspend the same from one of the bolster-transoms, rods connecting lthe ends of said bar with one of said beams to provide clearance between for a motor, a main brake-lever fulcrumed to said bar near its center and to the upper end of which poweris appliedto operate the mechanism, an

VequaliZing-lever suspended from the other bolster-transoms near the center thereof, a rod extending from the lower end of said lever to the center of the other brake-beam, and a link or rod connecting the equalizinglever with the main operating-lever, the connection between the link or rod and one of IOO IIO

jacent to the center of the truck, an equaliz# ing-leverpendent from the truck-frame, a rod secured between said equalizing-lever, and said main lever With an adjustable eonneetion with one of them, whereby the pressure upon the brake-shoes may be differentiated. Signed at the city of Philadelphia, bounty of Philadelphia, and State of Pennsylvania, this 30th day of November, 1900.

\ "WALTER S. ADAMS.

Witnesses:

W. W. EUTING, J r., TERRENCE MoCUsKER. 

